Results for: Enzyme

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In Science

What does an enzyme do?

Enzymes are biological proteins that are used to catalyze chemicalreactions on organic molecules. The substrates (reactant molecules)bind to the enzyme, and the energy to comb… (MORE)

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In Catalysts and Catalysis

What can an enzyme do?

Speeds up the rates of chemical reactions by providing energy for the cell to use. Thus, the cell is not working as hard to perform the task. You need enzymes to survive. That… (MORE)

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Rona-SS

8 Contributions

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In Catalysts and Catalysis

If an enzyme is boiled what happens to the enzyme?

As the enzyme gets boiled, the extra heat breaks the bonds that make up the enzyme. This changes it's shape. When an enzyme lose4s it's shape, shape of active site, it loses i… (MORE)

Pedro Liranzo

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Pad125

14 Contributions

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In Catalysts and Catalysis

Which enzymes do what and where?

There are so many enzymes working throughout the body it is hard to list them all. But here's the IMPORTANT THREE. Amylase: Converts starch (like potatoes) into sugars. Pres… (MORE)

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97 andrea

3 Contributions

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In Catalysts and Catalysis

What is enzyme and what does it do?

Enzymes are responsible for many things. They break down fat in the body, enhance blood, and they also enhance mental capacity. Enzymes also help people lose large amounts of … (MORE)

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In Catalysts and Catalysis

What does enzyme do?

they speed up chemical reactions without changing the equilibrium position and without being permantly altered themselves

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Gauravmicro

76,246 Contributions

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In Catalysts and Catalysis

What are the applications of enzymes?

Biological function Enzymes serve a wide variety of functions inside living organisms. They are indispensable for signal transduction and cell regulation, often via kinases an…d phosphatases. They also generate movement, with myosin hydrolysing ATP to generate muscle contraction and also moving cargo around the cell as part of the cytoskeleton. Other ATPases in the cell membrane are ion pumps involved in active transport. Enzymes are also involved in more exotic functions, such as luciferase generating light in fireflies. Viruses can also contain enzymes for infecting cells, such as the HIV integrase and reverse transcriptase, or for viral release from cells, like the influenza virus neuraminidase. An important function of enzymes is in the digestive systems of animals. Enzymes such as amylases and proteases break down large molecules (starch or proteins, respectively) into smaller ones, so they can be absorbed by the intestines. Starch molecules, for example, are too large to be absorbed from the intestine, but enzymes hydrolyse the starch chains into smaller molecules such as maltose and eventually glucose, which can then be absorbed. Different enzymes digest different food substances. In ruminants which have herbivorous diets, microorganisms in the gut produce another enzyme, cellulase to break down the cellulose cell walls of plant fiber. Several enzymes can work together in a specific order, creating metabolic pathways. In a metabolic pathway, one enzyme takes the product of another enzyme as a substrate. After the catalytic reaction, the product is then passed on to another enzyme. Sometimes more than one enzyme can catalyze the same reaction in parallel, this can allow more complex regulation: with for example a low constant activity being provided by one enzyme but an inducible high activity from a second enzyme. Enzymes determine what steps occur in these pathways. Without enzymes, metabolism would neither progress through the same steps, nor be fast enough to serve the needs of the cell. Indeed, a metabolic pathway such as glycolysis could not exist independently of enzymes. Glucose, for example, can react directly with ATP to become phosphorylated at one or more of its carbons. In the absence of enzymes, this occurs so slowly as to be insignificant. However, if hexokinase is added, these slow reactions continue to take place except that phosphorylation at carbon 6 occurs so rapidly that if the mixture is tested a short time later, glucose-6-phosphate is found to be the only significant product. Consequently, the network of metabolic pathways within each cell depends on the set of functional enzymes that are present. Industrial applications Enzymes are used in the chemical industry and other industrial applications when extremely specific catalysts are required. However, enzymes in general are limited in the number of reactions they have evolved to catalyze and also by their lack of stability in organic solvents and at high temperatures. Consequently, protein engineering is an active area of research and involves attempts to create new enzymes with novel properties, either through rational design or in vitro evolution. These efforts have begun to be successful, and a few enzymes have now been desiged "from scratch" to catalyse reactions that do not occur in nature. (MORE)

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In Catalysts and Catalysis

What is Enzyme purification?

enzyme purification is a process involve purification of protein depends on its unique structure, which determines both biological function and properties in solution

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Xleeee

46 Contributions

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In Catalysts and Catalysis

Enzymes and their co enzymes?

Coenzymes are organic molecules, such as vitamins, which enable enzymes to function and catalyse their substrates

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Sarah Young Hopes

2 Contributions

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In Biology

What do enzymes do?

The enzynamtic pathway is made of Enzymes are biological catalysts which break down large molecules into smaller ones, so that they can be absorbed into the blood stream and t… (MORE)

Troy Liedle

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